Alert archive / Pennsylvania / Winter Storm Watches in 2021
Winter Storm Watch 1, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this winter storm watch at Jan 24, 2021, 3:43 AM EST for Fayette County, Westmoreland County, Pennsylvania; Preston County, Tucker County, West Virginia. It took effect at Jan 25, 2021, 2:00 PM EST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Jan 24, 2021, 3:43 AM EST (08:43 UTC)
- In effect from
- Jan 25, 2021, 2:00 PM EST
- Expired
- Jan 25, 2021, 3:47 AM EST
- In force
- Issued by
- NWS Pittsburgh, PA
Counties Fayette County, PA, Westmoreland County, PA, Preston County, WV, Tucker County, WV
The radar
The Pittsburgh radar (KPBZ), 107 km from the middle of the area, began a volume at 08:45 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 8.7 hours before the alert went out and 90 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1183 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Pittsburgh, PA wrote its last area forecast discussion before this winter storm watch went out at Jan 23, 9:15 PM EST, 6 hours 28 minutes earlier.
Area forecast discussion, Jan 23, 9:15 PM EST, 6 hours 28 minutes before
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</html>The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 24, 6:35 PM EST | Winter Weather Advisory | PBZ | Belmont, Coshocton, Guernsey, Monroe, Muskingum, Noble | 5 hr |
Nearby
Winter Storm Watches in Pennsylvania, 2021Winter Storm Watches in West Virginia, 2021Every winter storm watch in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.